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c

org.apache.spark.sql.execution.streaming

AvailableNowSourceWrapper

class AvailableNowSourceWrapper extends AvailableNowDataStreamWrapper with Source

This class wraps a Source and makes it supports Trigger.AvailableNow.

See AvailableNowDataStreamWrapper for more details.

Linear Supertypes
Source, AvailableNowDataStreamWrapper, Logging, SupportsTriggerAvailableNow, SupportsAdmissionControl, SparkDataStream, AnyRef, Any
Ordering
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  2. By Inheritance
Inherited
  1. AvailableNowSourceWrapper
  2. Source
  3. AvailableNowDataStreamWrapper
  4. Logging
  5. SupportsTriggerAvailableNow
  6. SupportsAdmissionControl
  7. SparkDataStream
  8. AnyRef
  9. Any
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Visibility
  1. Public
  2. Protected

Instance Constructors

  1. new AvailableNowSourceWrapper(delegate: Source)

Type Members

  1. implicit class LogStringContext extends AnyRef
    Definition Classes
    Logging

Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##: Int
    Definition Classes
    AnyRef → Any
  3. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  4. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  5. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.CloneNotSupportedException]) @IntrinsicCandidate() @native()
  6. def commit(end: connector.read.streaming.Offset): Unit
    Definition Classes
    Source → SparkDataStream
  7. def commit(end: Offset): Unit

    Informs the source that Spark has completed processing all data for offsets less than or equal to end and will only request offsets greater than end in the future.

    Informs the source that Spark has completed processing all data for offsets less than or equal to end and will only request offsets greater than end in the future.

    Definition Classes
    Source
  8. val delegate: SparkDataStream
    Definition Classes
    AvailableNowDataStreamWrapper
  9. def deserializeOffset(json: String): connector.read.streaming.Offset
    Definition Classes
    Source → SparkDataStream
  10. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  11. def equals(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef → Any
  12. def getBatch(start: Option[Offset], end: Offset): DataFrame

    Returns the data that is between the offsets (start, end].

    Returns the data that is between the offsets (start, end]. When start is None, then the batch should begin with the first record. This method must always return the same data for a particular start and end pair; even after the Source has been restarted on a different node.

    Higher layers will always call this method with a value of start greater than or equal to the last value passed to commit and a value of end less than or equal to the last value returned by getOffset

    It is possible for the Offset type to be a SerializedOffset when it was obtained from the log. Moreover, StreamExecution only compares the Offset JSON representation to determine if the two objects are equal. This could have ramifications when upgrading Offset JSON formats i.e., two equivalent Offset objects could differ between version. Consequently, StreamExecution may call this method with two such equivalent Offset objects. In which case, the Source should return an empty DataFrame

    Definition Classes
    AvailableNowSourceWrapper → Source
  13. final def getClass(): Class[_ <: AnyRef]
    Definition Classes
    AnyRef → Any
    Annotations
    @IntrinsicCandidate() @native()
  14. def getDefaultReadLimit(): ReadLimit

    Always return ReadLimit.allAvailable

    Always return ReadLimit.allAvailable

    Definition Classes
    AvailableNowDataStreamWrapper → SupportsAdmissionControl
  15. def getOffset: Option[Offset]

    Returns the maximum available offset for this source.

    Returns the maximum available offset for this source. Returns None if this source has never received any data.

    Definition Classes
    AvailableNowSourceWrapper → Source
  16. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @IntrinsicCandidate() @native()
  17. def initialOffset(): connector.read.streaming.Offset
    Definition Classes
    Source → SparkDataStream
  18. def initializeLogIfNecessary(isInterpreter: Boolean, silent: Boolean): Boolean
    Attributes
    protected
    Definition Classes
    Logging
  19. def initializeLogIfNecessary(isInterpreter: Boolean): Unit
    Attributes
    protected
    Definition Classes
    Logging
  20. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  21. def isTraceEnabled(): Boolean
    Attributes
    protected
    Definition Classes
    Logging
  22. def latestOffset(startOffset: connector.read.streaming.Offset, limit: ReadLimit): connector.read.streaming.Offset

    Return the latest offset pre-fetched in prepareForTriggerAvailableNow.

    Return the latest offset pre-fetched in prepareForTriggerAvailableNow.

    Definition Classes
    AvailableNowDataStreamWrapper → SupportsAdmissionControl
  23. def log: Logger
    Attributes
    protected
    Definition Classes
    Logging
  24. def logDebug(msg: => String, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  25. def logDebug(entry: LogEntry, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  26. def logDebug(entry: LogEntry): Unit
    Attributes
    protected
    Definition Classes
    Logging
  27. def logDebug(msg: => String): Unit
    Attributes
    protected
    Definition Classes
    Logging
  28. def logError(msg: => String, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  29. def logError(entry: LogEntry, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  30. def logError(entry: LogEntry): Unit
    Attributes
    protected
    Definition Classes
    Logging
  31. def logError(msg: => String): Unit
    Attributes
    protected
    Definition Classes
    Logging
  32. def logInfo(msg: => String, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  33. def logInfo(entry: LogEntry, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  34. def logInfo(entry: LogEntry): Unit
    Attributes
    protected
    Definition Classes
    Logging
  35. def logInfo(msg: => String): Unit
    Attributes
    protected
    Definition Classes
    Logging
  36. def logName: String
    Attributes
    protected
    Definition Classes
    Logging
  37. def logTrace(msg: => String, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  38. def logTrace(entry: LogEntry, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  39. def logTrace(entry: LogEntry): Unit
    Attributes
    protected
    Definition Classes
    Logging
  40. def logTrace(msg: => String): Unit
    Attributes
    protected
    Definition Classes
    Logging
  41. def logWarning(msg: => String, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  42. def logWarning(entry: LogEntry, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  43. def logWarning(entry: LogEntry): Unit
    Attributes
    protected
    Definition Classes
    Logging
  44. def logWarning(msg: => String): Unit
    Attributes
    protected
    Definition Classes
    Logging
  45. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  46. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @IntrinsicCandidate() @native()
  47. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @IntrinsicCandidate() @native()
  48. def prepareForTriggerAvailableNow(): Unit

    Fetch and store the latest offset for all available data at the beginning of the query.

    Fetch and store the latest offset for all available data at the beginning of the query.

    Definition Classes
    AvailableNowDataStreamWrapper → SupportsTriggerAvailableNow
  49. def reportLatestOffset(): connector.read.streaming.Offset
    Definition Classes
    AvailableNowDataStreamWrapper → SupportsAdmissionControl
  50. def schema: StructType

    Returns the schema of the data from this source

    Returns the schema of the data from this source

    Definition Classes
    AvailableNowSourceWrapper → Source
  51. def stop(): Unit
    Definition Classes
    AvailableNowDataStreamWrapper → SparkDataStream
  52. final def synchronized[T0](arg0: => T0): T0
    Definition Classes
    AnyRef
  53. def toString(): String
    Definition Classes
    AnyRef → Any
  54. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  55. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException]) @native()
  56. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  57. def withLogContext(context: HashMap[String, String])(body: => Unit): Unit
    Attributes
    protected
    Definition Classes
    Logging

Deprecated Value Members

  1. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.Throwable]) @Deprecated
    Deprecated

    (Since version 9)

Inherited from Source

Inherited from AvailableNowDataStreamWrapper

Inherited from Logging

Inherited from SupportsTriggerAvailableNow

Inherited from SupportsAdmissionControl

Inherited from SparkDataStream

Inherited from AnyRef

Inherited from Any

Ungrouped